I think I'm finally going to jailbreak my iPhone 3GS (yes the old version of the iPhone) anyways....have a few questions as I tried to research this & still little bit confused. Can I jailbreak it for free or it is best to pay to have it done? Do I have to unlock it first then jailbreak? Do I have to have a computer to jailbreak or can I do it straight from my phone or ipad? Thanks anymore useful information will be greatly appreciated.